"I have set the Lord always before me: because he is at my right hand, I shall not be moved" (Psalm 16:8).
The scriptural way to see things is to set the Lord always before us, put Christ in the center of our vision, and if satan is lurking around he will appear on the margin only and be seen as but a shadow on the edge of the brightness. It is always wrong to reverse this - to set satan in the focus of our vision and push God out to the margin. Nothing but tragedy can come of such inversion.
The best way to keep the enemy out is to keep Christ in. The sheep need not be terrified by the wolf; they have but to stay close to the shepherd.
The instructed Christian will practice the presence of God and never allow himself to become devil-conscious.
Brother Lawrence wouldn't pick up a straw from the ground but for the love of God. When he was dying he said, "...When I die I won't change my occupation. I have just been worshiping God for 40 years on earth, and when I get to heaven I'll just keep right on doing what I am doing."
~A. W. Tozer~